It's been a while since I built a box, so, before I do something expensive and daft...I'm building a headless 24/7 server box for the home. It will run Fedora Linux and provide a secure Internet gateway, home network services and a MythTV master back-end.

Other:Cash (as ever) is tight, so I'm looking for good value and reliability. Don't mind spending money on things that make a difference, e.g. over-rated heatsink.Run headless. Administer via SSH. Accessible but in a spare room. Reboot only for kernel updates, around every 2 weeks.Will run as a router/firewall/proxy between the home Gbit LAN switch and ADSL2+ modem (bridge mode).Will need to do some MPEG processing etc.May be used occasionally as a MythTV front-end via HDMI to a TV (USB/CEC bridge for TV remote).May add a PCIe dual tuner DVB-T2 card later.

The only app that will make use of the i5 is your MPEG processing....but, do you care how much time it takes to convert files? If not, you could scale back to an i3-3225, which seems to be the HTPC IVB processor of choice. That'll save you ~$100.

Instead of the $60-70 Prolimatech Megahalems Rev C, how about the Coolermaster Hyper 212+ for $15 and a $10 Scythe PWM fan?

If cash really is tight, I really would consider whether or not such a system is really neccessary. Not just in terms of capital expense but also electricty usage. As this is for domestic use, what is wrong with the security provided by a basic router? How many systems will connect to this system for each of the services that it will provide? How many people are there in your household? I see this kind of thing as a vanity project.

For the media applications, why not instead have a system for this purpose, in the room where it will be used, switch it on when you need it and switch it off when you're done.

Well, to be fair, if you're going to set up a dvr, you really need it to be on all the time to catch tv shows. But in terms of more pertinent information, I recently updated one of my dvrs with a z77 board, and the on board video works well enough for watching shows. Although I am using windows media center, so YMMV.

CA_Steve: The i3 3225 looks interesting. Less cash, more GPU and TDP is 55W vs. the 77W for the i5. Should still be faster than my current Core2 Duo for MPEG processing. Reduces cooler requirements too. I'll look in to the Coolmaster... I just love the Prolima mounting system.I looked at the low-profile, low voltage RAM along the way and it looks expensive and slow from what I can see. I'll think about that.

edh: The new box running 24/7 will allow me to switch my workstation off when I'm not using it. It's an older, hotter box so there [i]should[/i] be an overall reduction in power consumption. I want to get idle power down to ~30W if I can.The main reasons for the system are a web privacy proxy (privoxy) and MythTV recording scheduling. There are a number of other systems in the home that use the facilities; laptops, Wii, smart TV, smart phones etc. The security provided by a home router may be good but I want much better. It will also provide a number of other Intranet services e.g. web, email collection and redistribution etc. All these services currently run on my workstation so I can't afford to break it too often.

After installing Fedora f18 Beta and setting CPU governor to “ondemand” to power consumption is now 25-26W. Impressed!

The only “fly in the ointment” now is that the Seasonic G360 whines when “off”. Probably the converter for stand-by 5V power since the Intel NIC is configured for wake-up-on-LAN. Not too bad, quite high frequency but noticeable on the bench. Can't hear it when installed under the desk and it will be running 24/7.

As for other noise, the main source is the hard disk. The Lian Li isolators are not as effective as the Antec SOLO trays and the Hitachi DeskStar is not the quietest drive around. Might be time to look at SSD, at least for the “boot” drive. Fans are quiet but the Noctua cooler came with four resistor leads and a Y-cable, now gainfully employed, still positive pressure. With 21deg.C ambient the processor cores are at... 26deg.C. The only components that feel anything other than COLD are the inner end of the PSU and the HD. Just a dual DVB PCI card to go in, but that does run hot and there's a lot of configuring to do first.

The ASUS motherboard uses a “super I/O” chip (NCT6779T) that is not yet supported by Linux, so hardware monitoring is just core temperatures at the moment. No volts, no RPM, no Linux fan control or thermal zones. The w83627ehf driver should recognise it but it does not. Driver updates are currently being reviewed but it may take a while before they hit Fedora.

My last MB was a Gigabyte and I likes the 4-second power button feature. Pressing the power button on the ASUS kills the power immediately while on the Gigabyte you have to hold the button for 4 seconds.

In all, I'm happy and looking forward to being able to turn my workstation off when not in use.

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